xref: /openbmc/linux/sound/firewire/dice/dice-proc.c (revision da607e19)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * dice_proc.c - a part of driver for Dice based devices
4  *
5  * Copyright (c) Clemens Ladisch
6  * Copyright (c) 2014 Takashi Sakamoto
7  */
8 
9 #include "dice.h"
10 
dice_proc_read_mem(struct snd_dice * dice,void * buffer,unsigned int offset_q,unsigned int quadlets)11 static int dice_proc_read_mem(struct snd_dice *dice, void *buffer,
12 			      unsigned int offset_q, unsigned int quadlets)
13 {
14 	unsigned int i;
15 	int err;
16 
17 	err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
18 				 DICE_PRIVATE_SPACE + 4 * offset_q,
19 				 buffer, 4 * quadlets, 0);
20 	if (err < 0)
21 		return err;
22 
23 	for (i = 0; i < quadlets; ++i)
24 		be32_to_cpus(&((u32 *)buffer)[i]);
25 
26 	return 0;
27 }
28 
str_from_array(const char * const strs[],unsigned int count,unsigned int i)29 static const char *str_from_array(const char *const strs[], unsigned int count,
30 				  unsigned int i)
31 {
32 	if (i < count)
33 		return strs[i];
34 
35 	return "(unknown)";
36 }
37 
dice_proc_fixup_string(char * s,unsigned int size)38 static void dice_proc_fixup_string(char *s, unsigned int size)
39 {
40 	unsigned int i;
41 
42 	for (i = 0; i < size; i += 4)
43 		cpu_to_le32s((u32 *)(s + i));
44 
45 	for (i = 0; i < size - 2; ++i) {
46 		if (s[i] == '\0')
47 			return;
48 		if (s[i] == '\\' && s[i + 1] == '\\') {
49 			s[i + 2] = '\0';
50 			return;
51 		}
52 	}
53 	s[size - 1] = '\0';
54 }
55 
dice_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)56 static void dice_proc_read(struct snd_info_entry *entry,
57 			   struct snd_info_buffer *buffer)
58 {
59 	static const char *const section_names[5] = {
60 		"global", "tx", "rx", "ext_sync", "unused2"
61 	};
62 	static const char *const clock_sources[] = {
63 		"aes1", "aes2", "aes3", "aes4", "aes", "adat", "tdif",
64 		"wc", "arx1", "arx2", "arx3", "arx4", "internal"
65 	};
66 	static const char *const rates[] = {
67 		"32000", "44100", "48000", "88200", "96000", "176400", "192000",
68 		"any low", "any mid", "any high", "none"
69 	};
70 	struct snd_dice *dice = entry->private_data;
71 	u32 sections[ARRAY_SIZE(section_names) * 2];
72 	struct {
73 		u32 number;
74 		u32 size;
75 	} tx_rx_header;
76 	union {
77 		struct {
78 			u32 owner_hi, owner_lo;
79 			u32 notification;
80 			char nick_name[NICK_NAME_SIZE];
81 			u32 clock_select;
82 			u32 enable;
83 			u32 status;
84 			u32 extended_status;
85 			u32 sample_rate;
86 			u32 version;
87 			u32 clock_caps;
88 			char clock_source_names[CLOCK_SOURCE_NAMES_SIZE];
89 		} global;
90 		struct {
91 			u32 iso;
92 			u32 number_audio;
93 			u32 number_midi;
94 			u32 speed;
95 			char names[TX_NAMES_SIZE];
96 			u32 ac3_caps;
97 			u32 ac3_enable;
98 		} tx;
99 		struct {
100 			u32 iso;
101 			u32 seq_start;
102 			u32 number_audio;
103 			u32 number_midi;
104 			char names[RX_NAMES_SIZE];
105 			u32 ac3_caps;
106 			u32 ac3_enable;
107 		} rx;
108 		struct {
109 			u32 clock_source;
110 			u32 locked;
111 			u32 rate;
112 			u32 adat_user_data;
113 		} ext_sync;
114 	} buf;
115 	unsigned int quadlets, stream, i;
116 
117 	if (dice_proc_read_mem(dice, sections, 0, ARRAY_SIZE(sections)) < 0)
118 		return;
119 	snd_iprintf(buffer, "sections:\n");
120 	for (i = 0; i < ARRAY_SIZE(section_names); ++i)
121 		snd_iprintf(buffer, "  %s: offset %u, size %u\n",
122 			    section_names[i],
123 			    sections[i * 2], sections[i * 2 + 1]);
124 
125 	quadlets = min_t(u32, sections[1], sizeof(buf.global) / 4);
126 	if (dice_proc_read_mem(dice, &buf.global, sections[0], quadlets) < 0)
127 		return;
128 	snd_iprintf(buffer, "global:\n");
129 	snd_iprintf(buffer, "  owner: %04x:%04x%08x\n",
130 		    buf.global.owner_hi >> 16,
131 		    buf.global.owner_hi & 0xffff, buf.global.owner_lo);
132 	snd_iprintf(buffer, "  notification: %08x\n", buf.global.notification);
133 	dice_proc_fixup_string(buf.global.nick_name, NICK_NAME_SIZE);
134 	snd_iprintf(buffer, "  nick name: %s\n", buf.global.nick_name);
135 	snd_iprintf(buffer, "  clock select: %s %s\n",
136 		    str_from_array(clock_sources, ARRAY_SIZE(clock_sources),
137 				   buf.global.clock_select & CLOCK_SOURCE_MASK),
138 		    str_from_array(rates, ARRAY_SIZE(rates),
139 				   (buf.global.clock_select & CLOCK_RATE_MASK)
140 				   >> CLOCK_RATE_SHIFT));
141 	snd_iprintf(buffer, "  enable: %u\n", buf.global.enable);
142 	snd_iprintf(buffer, "  status: %slocked %s\n",
143 		    buf.global.status & STATUS_SOURCE_LOCKED ? "" : "un",
144 		    str_from_array(rates, ARRAY_SIZE(rates),
145 				   (buf.global.status &
146 				    STATUS_NOMINAL_RATE_MASK)
147 				   >> CLOCK_RATE_SHIFT));
148 	snd_iprintf(buffer, "  ext status: %08x\n", buf.global.extended_status);
149 	snd_iprintf(buffer, "  sample rate: %u\n", buf.global.sample_rate);
150 	if (quadlets >= 90) {
151 		snd_iprintf(buffer, "  version: %u.%u.%u.%u\n",
152 			    (buf.global.version >> 24) & 0xff,
153 			    (buf.global.version >> 16) & 0xff,
154 			    (buf.global.version >>  8) & 0xff,
155 			    (buf.global.version >>  0) & 0xff);
156 		snd_iprintf(buffer, "  clock caps:");
157 		for (i = 0; i <= 6; ++i)
158 			if (buf.global.clock_caps & (1 << i))
159 				snd_iprintf(buffer, " %s", rates[i]);
160 		for (i = 0; i <= 12; ++i)
161 			if (buf.global.clock_caps & (1 << (16 + i)))
162 				snd_iprintf(buffer, " %s", clock_sources[i]);
163 		snd_iprintf(buffer, "\n");
164 		dice_proc_fixup_string(buf.global.clock_source_names,
165 				       CLOCK_SOURCE_NAMES_SIZE);
166 		snd_iprintf(buffer, "  clock source names: %s\n",
167 			    buf.global.clock_source_names);
168 	}
169 
170 	if (dice_proc_read_mem(dice, &tx_rx_header, sections[2], 2) < 0)
171 		return;
172 	quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.tx) / 4);
173 	for (stream = 0; stream < tx_rx_header.number; ++stream) {
174 		if (dice_proc_read_mem(dice, &buf.tx, sections[2] + 2 +
175 				       stream * tx_rx_header.size,
176 				       quadlets) < 0)
177 			break;
178 		snd_iprintf(buffer, "tx %u:\n", stream);
179 		snd_iprintf(buffer, "  iso channel: %d\n", (int)buf.tx.iso);
180 		snd_iprintf(buffer, "  audio channels: %u\n",
181 			    buf.tx.number_audio);
182 		snd_iprintf(buffer, "  midi ports: %u\n", buf.tx.number_midi);
183 		snd_iprintf(buffer, "  speed: S%u\n", 100u << buf.tx.speed);
184 		if (quadlets >= 68) {
185 			dice_proc_fixup_string(buf.tx.names, TX_NAMES_SIZE);
186 			snd_iprintf(buffer, "  names: %s\n", buf.tx.names);
187 		}
188 		if (quadlets >= 70) {
189 			snd_iprintf(buffer, "  ac3 caps: %08x\n",
190 				    buf.tx.ac3_caps);
191 			snd_iprintf(buffer, "  ac3 enable: %08x\n",
192 				    buf.tx.ac3_enable);
193 		}
194 	}
195 
196 	if (dice_proc_read_mem(dice, &tx_rx_header, sections[4], 2) < 0)
197 		return;
198 	quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.rx) / 4);
199 	for (stream = 0; stream < tx_rx_header.number; ++stream) {
200 		if (dice_proc_read_mem(dice, &buf.rx, sections[4] + 2 +
201 				       stream * tx_rx_header.size,
202 				       quadlets) < 0)
203 			break;
204 		snd_iprintf(buffer, "rx %u:\n", stream);
205 		snd_iprintf(buffer, "  iso channel: %d\n", (int)buf.rx.iso);
206 		snd_iprintf(buffer, "  sequence start: %u\n", buf.rx.seq_start);
207 		snd_iprintf(buffer, "  audio channels: %u\n",
208 			    buf.rx.number_audio);
209 		snd_iprintf(buffer, "  midi ports: %u\n", buf.rx.number_midi);
210 		if (quadlets >= 68) {
211 			dice_proc_fixup_string(buf.rx.names, RX_NAMES_SIZE);
212 			snd_iprintf(buffer, "  names: %s\n", buf.rx.names);
213 		}
214 		if (quadlets >= 70) {
215 			snd_iprintf(buffer, "  ac3 caps: %08x\n",
216 				    buf.rx.ac3_caps);
217 			snd_iprintf(buffer, "  ac3 enable: %08x\n",
218 				    buf.rx.ac3_enable);
219 		}
220 	}
221 
222 	quadlets = min_t(u32, sections[7], sizeof(buf.ext_sync) / 4);
223 	if (quadlets >= 4) {
224 		if (dice_proc_read_mem(dice, &buf.ext_sync,
225 				       sections[6], 4) < 0)
226 			return;
227 		snd_iprintf(buffer, "ext status:\n");
228 		snd_iprintf(buffer, "  clock source: %s\n",
229 			    str_from_array(clock_sources,
230 					   ARRAY_SIZE(clock_sources),
231 					   buf.ext_sync.clock_source));
232 		snd_iprintf(buffer, "  locked: %u\n", buf.ext_sync.locked);
233 		snd_iprintf(buffer, "  rate: %s\n",
234 			    str_from_array(rates, ARRAY_SIZE(rates),
235 					   buf.ext_sync.rate));
236 		snd_iprintf(buffer, "  adat user data: ");
237 		if (buf.ext_sync.adat_user_data & ADAT_USER_DATA_NO_DATA)
238 			snd_iprintf(buffer, "-\n");
239 		else
240 			snd_iprintf(buffer, "%x\n",
241 				    buf.ext_sync.adat_user_data);
242 	}
243 }
244 
dice_proc_read_formation(struct snd_info_entry * entry,struct snd_info_buffer * buffer)245 static void dice_proc_read_formation(struct snd_info_entry *entry,
246 				     struct snd_info_buffer *buffer)
247 {
248 	static const char *const rate_labels[] = {
249 		[SND_DICE_RATE_MODE_LOW]	= "low",
250 		[SND_DICE_RATE_MODE_MIDDLE]	= "middle",
251 		[SND_DICE_RATE_MODE_HIGH]	= "high",
252 	};
253 	struct snd_dice *dice = entry->private_data;
254 	int i, j;
255 
256 	snd_iprintf(buffer, "Output stream from unit:\n");
257 	for (i = 0; i < SND_DICE_RATE_MODE_COUNT; ++i)
258 		snd_iprintf(buffer, "\t%s", rate_labels[i]);
259 	snd_iprintf(buffer, "\tMIDI\n");
260 	for (i = 0; i < MAX_STREAMS; ++i) {
261 		snd_iprintf(buffer, "Tx %u:", i);
262 		for (j = 0; j < SND_DICE_RATE_MODE_COUNT; ++j)
263 			snd_iprintf(buffer, "\t%u", dice->tx_pcm_chs[i][j]);
264 		snd_iprintf(buffer, "\t%u\n", dice->tx_midi_ports[i]);
265 	}
266 
267 	snd_iprintf(buffer, "Input stream to unit:\n");
268 	for (i = 0; i < SND_DICE_RATE_MODE_COUNT; ++i)
269 		snd_iprintf(buffer, "\t%s", rate_labels[i]);
270 	snd_iprintf(buffer, "\n");
271 	for (i = 0; i < MAX_STREAMS; ++i) {
272 		snd_iprintf(buffer, "Rx %u:", i);
273 		for (j = 0; j < SND_DICE_RATE_MODE_COUNT; ++j)
274 			snd_iprintf(buffer, "\t%u", dice->rx_pcm_chs[i][j]);
275 		snd_iprintf(buffer, "\t%u\n", dice->rx_midi_ports[i]);
276 	}
277 }
278 
add_node(struct snd_dice * dice,struct snd_info_entry * root,const char * name,void (* op)(struct snd_info_entry * entry,struct snd_info_buffer * buffer))279 static void add_node(struct snd_dice *dice, struct snd_info_entry *root,
280 		     const char *name,
281 		     void (*op)(struct snd_info_entry *entry,
282 				struct snd_info_buffer *buffer))
283 {
284 	struct snd_info_entry *entry;
285 
286 	entry = snd_info_create_card_entry(dice->card, name, root);
287 	if (entry)
288 		snd_info_set_text_ops(entry, dice, op);
289 }
290 
snd_dice_create_proc(struct snd_dice * dice)291 void snd_dice_create_proc(struct snd_dice *dice)
292 {
293 	struct snd_info_entry *root;
294 
295 	/*
296 	 * All nodes are automatically removed at snd_card_disconnect(),
297 	 * by following to link list.
298 	 */
299 	root = snd_info_create_card_entry(dice->card, "firewire",
300 					  dice->card->proc_root);
301 	if (!root)
302 		return;
303 	root->mode = S_IFDIR | 0555;
304 
305 	add_node(dice, root, "dice", dice_proc_read);
306 	add_node(dice, root, "formation", dice_proc_read_formation);
307 }
308